Let's get this math done. We have 140 and we're going to multiply it by 8. This is the same as taking 140 and adding it to itself 8 times.
Step 1: 0 + 140 = 140
Step 2: 140 + 140 = 280
Step 3: 280 + 140 = 420
Step 4: 420 + 140 = 560
Step 5: 560 + 140 = 700
Step 6: 700 + 140 = 840
Step 7: 840 + 140 = 980
Step 8: 980 + 140 = 1120

So, 140*8 = 1120